Aplysia juliana

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Walking sea hare
Aplysia juliana, Osezaki.jpg
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
(unranked): clade Heterobranchia
clade Euthyneura
clade Euopisthobranchia
clade Aplysiomorpha
Superfamily: Aplysioidea
Family: Aplysiidae
Genus: Aplysia
Species: A. juliana
Binomial name
Aplysia juliana
(Quoy & Gaimard, 1832)

Aplysia brunnea Hutton, 1874[1]

Aplysia juliana, common name the walking sea hare, is a species of sea slug, more specifically a sea hare, a marine gastropod mollusk in the family Aplysiidae, the sea hares.[2]


Distribution of this species is cosmopolitan, circumtropical in all warm seas.[citation needed]


Micrograph of the radula of Aplysia juliana

This sea hare has no purple gland and therefore cannot produce ink, just milky secretions. The posterior end of the foot in this species can act as a sucker.[citation needed]

The color of this sea hare is very often brown with paler spots, but it can be various other shades including plain black all over.[citation needed]

The maximum recorded length is 300 mm.[3]


Minimum recorded depth is 0 m.[3] Maximum recorded depth is 0 m.[3]


  1. ^ Hutton F. W. 1874 Description of two new Species of Aplysia. Transactions of the Royal Society of New Zealand, volume 7, page 279.
  2. ^ Gofas, S. (2010). Aplysia juliana Quoy & Gaimard, 1832. In: Bouchet, P.; Gofas, S.; Rosenberg, G. (2010) World Marine Mollusca database. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=138756 on 2011-02-26
  3. ^ a b c Welch J. J. (2010). "The "Island Rule" and Deep-Sea Gastropods: Re-Examining the Evidence". PLoS ONE 5(1): e8776. doi:10.1371/journal.pone.0008776.
  • Bebbington A. (1974) Aplysiid species from East Africa with notes on the Indian Ocean Aplysiomorpha (Gastropoda: Opisthobranchia). Zoological Journal of the Linnean Society 54(1): 63-99.
  • Bebbington A. (1977) Aplysiid species from Eastern Australia with notes on the Pacific Ocean Aplysiomorpha (Gastropoda, Opisthobranchia). Transactions of the Zoological Society of London 34: 87-147
  • Gofas, S.; Le Renard, J.; Bouchet, P. (2001). Mollusca, in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels, 50: pp. 180-213
  • Branch, G.M. et al. (2002). Two Oceans. 5th impression. David Philip, Cate Town & Johannesburg
  • Rosenberg, G., F. Moretzsohn, and E. F. García. 2009. Gastropoda (Mollusca) of the Gulf of Mexico, Pp. 579–699 in Felder, D.L. and D.K. Camp (eds.), Gulf of Mexico–Origins, Waters, and Biota. Biodiversity. Texas A&M Press, College Station, Texas

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